OBD
P235B
Cylinder 10 Combustion Performance
What it means
P235B means Cylinder 10 Combustion Performance.
Check these first
- A fouled spark plug or weak coil on cylinder 10
- A clogged cylinder 10 fuel injector
- Low compression in cylinder 10
- A vacuum leak feeding cylinder 10
What to do next
- Read misfire counters and cylinder 10 balance on a scan tool
- Inspect the cylinder 10 spark plug and coil
- Test the cylinder 10 fuel injector
- Perform a compression test on cylinder 10
- Repair the cylinder 10 fault found and recheck
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.